gismu rafsi: sol x1 is the sun of home planet x2 (default Earth) of race x3; (adjective:) x1 is solar. 'home planet' refers to a planet which is "home" to a race, but not necessarily the original "home" of a species if that species inhabits many worlds. See also gusni, lunra, mluni, plini, santa, terdi, tarci.